Grangemouth: timeline of the dispute

How the closure of the Grangemouth petrochemical plant unfolded.

April 2008 Workers hold 48-hour strike in row over pensions, and panic buying leads to long queues at petrol forecourts across the country. Incident estimated to have cost the economy £100m.

July 2013 Trades union Unite threatens industrial action over Grangemouth chemical plant's suspension, of Stephen Deans, a Unite official allegedly involved in the selection of a Labour parliamentary candidate in Falkirk.

September 6 Ineos boss Jim Ratcliffe warns in interview with The Telegraph that Grangemouth chemicals plant has two years at best if it does not receive Government support and strike a deal with unions to cut costs.

September 27 Workers vote in favour of strike action over treatment of Mr Deans, but date is not set.

October 4 Ineos writes down the value of the Grangemouth chemicals plant from £400m to nothing, saying it will not be able to keep the facility open if it does not cut staff costs.

October 22 Two-thirds of workers at the refinery refuse to accept new terms and conditions of Ineos's survival plan, which would cut pension entitlements, overtime pay and redundancy terms and institute a pay freeze.

October 23 Ineos announces that it will close the petrochemical site at Grangemouth after failing to reach a deal.